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Chapter 2, Smbus connector, Standby power led – DFI HD332-H81 User Manual

Page 27

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Chapter 2 Hardware Installation

Chapter 2

The SMBus (System Management Bus) connector is used to connect SMBus devices. It is a

multiple device bus that allows multiple chips to connect to the same bus and enable each one

to act as a master by initiating data transfer.

SMBus Connector

1

2

5

6

GND

+3.3V_standby

SMBUS_Data

SMBUS_CLK

NC

SMBUS_Alert#

COM2

COM1

SMBus

Standby Power LED

This LED will lit red when the system is in the standby mode. It indicates that there is power

on the system board. Power-off the PC and then unplug the power cord prior to installing any

devices. Failure to do so will cause severe damage to the motherboard and components.

Standby Power LED

COM2

COM1